28. which of the folówing muscle contributes to the pelvic diaphragm? a. levator

Question

28. which of the folówing muscle contributes to the pelvic diaphragm? a. levator ani b. internal urethral sphincter c. external urethral sphincter d. external anal sphincter 29. Name the nerve that innervates the majority of the pelvic floor muscles (including those of the perineum) and provides sensation from external a. obturator nerve b. subcostal nerve c. vagus nerve d. pudendal nerve e. pelvic splanchnic nerves 30. Name the specific serous membrane that lines digestice organs such as the stomach and the ce a. visceral pleura b. parietal pleura c. visceral peritoneum d. parietal peritoneum 31. Which of the following will not have a layer of visceral peritoneum? a. stomach b. jejunum c. ascending and descending aorta 4 d. both Cand D 32. Which portion of the pancreas fits into the C-shaped duodenum? a. head b. neck c. body

Explanation / Answer

28. The pelvic floor or diaphragm is composed of muscle fibres of LEVATOR ANI and the coccygeius muscle which spans the ase of the pelvis. (a) LEVATOR ANI

29.(d) PUDENDAL NERVE is the main nerve of the perinium and the pelvic floor muscles. It provides motor and sensory functions from the external.

30. (c) VISCERAL PERITONEUM is the specific serous membrane which line digestuve organs like stomach, intestine etc.

31 (d) The visceral peritoneum will not cover ascending and descending aorta since its covers abdominal organs and tracts only. So both C & D is not covered.

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